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/*
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* Copyright (C) 2008 Emweb bvba, Heverlee, Belgium.
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*
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* See the LICENSE file for terms of use.
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*/
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#include <Wt/WApplication.h>
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#include <Wt/WBreak.h>
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#include <Wt/WContainerWidget.h>
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#include <Wt/WLineEdit.h>
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#include <Wt/WPushButton.h>
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#include <Wt/WText.h>
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#include <Wt/WStackedWidget.h>
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#include <Wt/WHBoxLayout.h>
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#include <Wt/WLength.h>
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#include <Wt/WStandardItemModel.h>
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#include <Wt/Chart/WCartesianChart.h>
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#include <Wt/WFlags.h>
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#include <Wt/WResource.h>
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#include <Wt/WPainter.h>
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#include <Wt/WPdfImage.h>
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#include <Wt/WResource.h>
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#include <Wt/Http/Request.h>
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#include <Wt/Http/Response.h>
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#include <Wt/Render/WPdfRenderer.h>
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#include <hpdf.h>
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#include <Wt/WVBoxLayout.h>
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#include <Wt/WDatePicker.h>
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using namespace Wt;
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using namespace Wt::Chart;
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namespace {
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void HPDF_STDCALL error_handler(HPDF_STATUS error_no, HPDF_STATUS detail_no, void *user_data)
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{
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fprintf(stderr, "libharu error: error_no=%04X, detail_no=%d\n",
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(unsigned int)error_no, (int)detail_no);
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}
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}
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class ReportResource : public Wt::WResource
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{
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public:
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ReportResource();
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virtual ~ReportResource();
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virtual void handleRequest(const Wt::Http::Request& request,
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Wt::Http::Response& response);
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};
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//GLobal pointer for test
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WCartesianChart *chart = NULL;
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class HelloApplication : public Wt::WApplication
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{
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public:
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HelloApplication(const Wt::WEnvironment& env);
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private:
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};
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HelloApplication::HelloApplication(const Wt::WEnvironment& env)
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: WApplication(env)
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{
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setTitle("Hello world");
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//Main Container
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Wt::WContainerWidget *pCont1 = root()->addWidget(Wt::cpp14::make_unique<Wt::WContainerWidget>());
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pCont1->setWidth(Wt::WLength(100, Wt::WLength::Unit::Percentage));
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pCont1->setHeight(Wt::WLength(100, Wt::WLength::Unit::Percentage));
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pCont1->decorationStyle().setBackgroundColor(Wt::WColor("rgb(192,192,192)"));
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Wt::WVBoxLayout *pLayout = pCont1->setLayout(Wt::cpp14::make_unique<WVBoxLayout>());
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//Create Test-Model
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std::shared_ptr<WStandardItemModel> model
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= std::make_shared<WStandardItemModel>();
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//headers
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model->insertColumns(model->columnCount(), 2);
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model->setHeaderData(0, WString("Day"));
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model->setHeaderData(1, WString("Sales"));
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//data
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model->insertRows(model->rowCount(), 6);
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int row = 0;
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model->setData(row, 0, 1);
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model->setData(row, 1, 120);
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row++;
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model->setData(row, 0, 2);
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model->setData(row, 1, 30);
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row++;
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model->setData(row, 0, 3);
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model->setData(row, 1, 260);
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row++;
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model->setData(row, 0, 4);
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model->setData(row, 1, 160);
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row++;
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model->setData(row, 0, 5);
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model->setData(row, 1, 40);
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row++;
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model->setData(row, 0, 6);
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model->setData(row, 1, 120);
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row++;
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//Create Category Chart
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chart = pLayout->addWidget(cpp14::make_unique<WCartesianChart>());
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chart->setModel(model);
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chart->setXSeriesColumn(0);
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chart->setZoomEnabled(true);
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chart->setBackground(WColor(200, 200, 200));
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Wt::Chart::WheelActions actions;
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WFlags<KeyboardModifier> fl(KeyboardModifier::None);
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actions.insert(std::pair< WFlags<KeyboardModifier>, Wt::Chart::InteractiveAction>(fl, (Wt::Chart::InteractiveAction::ZoomX)));
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chart->setWheelActions(actions);
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for (int i = 1; i < model->columnCount(); ++i)
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{
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std::unique_ptr<WDataSeries> s
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= cpp14::make_unique<WDataSeries>(i, SeriesType::Bar);
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s->setShadow(WShadow(3, 3, WColor(0, 0, 0, 127), 3));
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chart->addSeries(std::move(s));
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}
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chart->resize(800, 400);
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WPushButton *btn_pdf = pLayout->addWidget(cpp14::make_unique<WPushButton>("Print Pdf"));
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auto r = std::make_shared<ReportResource>();
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btn_pdf->setLink(WLink(r));
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btn_pdf->resize("120px", "30px");
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Wt::WDatePicker *picker = pLayout->addWidget(cpp14::make_unique<WDatePicker>());
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}
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//Report Resource
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ReportResource::ReportResource() : WResource()
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{
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suggestFileName("report.pdf");
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}
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ReportResource::~ReportResource()
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{
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beingDeleted();
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}
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void ReportResource::handleRequest(const Wt::Http::Request& request, Wt::Http::Response& response)
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{
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response.setMimeType("application/pdf");
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HPDF_Doc pdf = HPDF_New(error_handler, 0);
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// Note: UTF-8 encoding (for TrueType fonts) is only available since libharu 2.3.0 !
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HPDF_UseUTFEncodings(pdf);
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HPDF_Page page = HPDF_AddPage(pdf);
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HPDF_Page_SetSize(page, HPDF_PAGE_SIZE_A4, HPDF_PAGE_PORTRAIT);
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Wt::Render::WPdfRenderer renderer(pdf, page);
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renderer.setMargin(2.54);
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renderer.setDpi(96);
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renderer.render(Wt::WString("<html><b>Hallo pdf</b></html>"));
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if (chart)
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{
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WPdfImage pdfImage(pdf, page, 0, 0, 600, 400);
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{
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WPainter p(&pdfImage);
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chart->paint(p);
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}
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}
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HPDF_SaveToStream(pdf);
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unsigned int size = HPDF_GetStreamSize(pdf);
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HPDF_BYTE *buf = new HPDF_BYTE[size];
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HPDF_ReadFromStream(pdf, buf, &size);
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HPDF_Free(pdf);
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response.out().write((char*)buf, size);
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delete[] buf;
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}
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int main(int argc, char **argv)
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{
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return Wt::WRun(argc, argv, [](const Wt::WEnvironment &env) {
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return Wt::cpp14::make_unique<HelloApplication>(env);
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});
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}
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